Sampling Frequency

This topic has 1 reply, 2 voices, and was last updated 16 years, 6 months ago by Smith.

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January 12, 2006 at 4:24 pm #41990

Whitehurst
★ 10 Years ★
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Hi,
I just came across a formula to determine frequency while sampling
the formla is k = ( critical specification – process average ) / Sp
where Sp = process variability
now its a little bit complicated how we calculate Sp
Sp = sqrt ( S ^ 2 pcl – S^2t)
S^pcl = = MR bar / 1.128
but i am not able to understand what is S^2t.
Can some one explain me this formula. Its in the book six sigma and beyond vol 4 Chapter 7.
Help please
Regards
joe

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January 12, 2006 at 4:35 pm #132301

Smith
★ 20 Years ★
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@Smith Include @Smith in your post and this person will
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I also came thru this formula but no idea how to use it. Good to know if someone replies. Lets see what Mr Darth or Mr Stan has to say about it if they know the answer ofcourse
Cheers
Smith

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